/* ═══════════════════════════════════════════════════════
   WALLPARI ANALYTICS — Design System
   Palette & patterns from wallparianalytics.io
   ═══════════════════════════════════════════════════════ */

/* ── View Transitions (cross-page) ── */
@view-transition{navigation:auto}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --navy:#05172f;
  --navy-80:rgba(5,23,47,.85);
  --navy-light:#0a3d62;
  --teal:#0d8a83;
  --teal-dark:#0a756f;
  --teal-glow:rgba(13,138,131,.18);
  --teal-text:#0a6e68;

  --bg:#f5f8fc;
  --bg-white:#ffffff;
  --text-dark:#0a2540;
  --text-mid:#2d4a5e;
  --text-light:#3d5a70;
  --text-muted:#4a6577;
  --text-inverse:#f5f5f5;
  --text-inverse-mid:rgba(255,255,255,.7);

  --border:#e2e8f0;
  --border-light:#eef2f7;

  /* sector accents */
  --gobierno:#4338ca;
  --cooperacion:#047857;
  --finanzas:#b45309;
  --academia:#0e7490;
  --independiente:#be123c;

  /* typography */
  --font-heading:'Montserrat',system-ui,sans-serif;
  --font-body:'Open Sans',system-ui,sans-serif;
  --font-mono:'IBM Plex Mono','Menlo',monospace;

  /* radii */
  --r-sm:4px;
  --r-md:8px;
  --r-lg:14px;
  --r-full:100px;

  /* shadows */
  --shadow-sm:0 2px 4px rgba(0,0,0,.06);
  --shadow-md:0 4px 16px rgba(0,0,0,.08);
  --shadow-lg:0 8px 32px rgba(0,0,0,.12);

  --nav-h:64px;

  /* transitions */
  --ease-out:cubic-bezier(.25,.46,.45,.94);
  --ease-spring:cubic-bezier(.34,1.56,.64,1);
  --dur-fast:.2s;
  --dur-med:.35s;
}

/* ── BASE ── */
html{scroll-behavior:smooth;width:100%;margin:0;padding:0}
body{
  font-family:var(--font-body);
  background:var(--bg-white);
  color:var(--text-dark);
  font-size:1.125rem;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  width:100%;margin:0;padding:0;
}

/* scrollbar */
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:var(--bg-white)}
::-webkit-scrollbar-thumb{background:#b0bec5;border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:#90a4ae}
html{scrollbar-color:#b0bec5 var(--bg-white);scrollbar-width:thin}

::selection{background:var(--teal);color:#fff}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
img{max-width:100%;display:block}

/* ── TYPOGRAPHY ── */
h1,h2,h3,h4{font-family:var(--font-heading);font-weight:700;line-height:1.2;color:var(--navy)}
h1{font-size:clamp(3.2rem,6vw,4.8rem);letter-spacing:-.02em}
h2{font-size:clamp(2.4rem,4.5vw,3.5rem);letter-spacing:-.01em}
h3{font-size:clamp(1.35rem,2.5vw,1.65rem)}
h4{font-size:clamp(1.25rem,1.8vw,1.4rem);font-weight:600}

p{max-width:72ch}

.mono{font-family:var(--font-mono);font-size:.82rem;font-weight:500;text-transform:uppercase;letter-spacing:.12em}

/* ── LAYOUT ── */
.section{padding:clamp(4rem,8vw,7rem) clamp(24px,3vw,48px);width:100%;max-width:1360px;margin-inline:auto}
.section--light{background:var(--bg-white)}
.section--white{background:var(--bg-white)}
.section--navy{background:var(--bg);color:var(--text-dark);max-width:none;padding-inline:max(clamp(24px,3vw,48px),calc(50% - 632px))}
.section--navy h2,.section--navy h3,.section--navy h4{color:var(--navy)}
.section--navy p{color:var(--text-mid)}

.section-label{
  font-family:var(--font-mono);font-size:.82rem;font-weight:500;
  color:var(--teal-text);text-transform:uppercase;letter-spacing:.14em;
  margin-bottom:12px;
}
.section--navy .section-label{color:var(--teal)}
.section-title{margin-bottom:20px}
.section-desc{color:var(--text-light);font-size:1.25rem;margin-bottom:48px}
.section--navy .section-desc{color:var(--text-mid)}

/* ── NAVIGATION ── */
.site-nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:var(--nav-h);
  background:var(--bg-white);
  display:flex;align-items:center;
  padding:0 clamp(24px,3vw,48px);
  border-bottom:1px solid var(--border);
  box-shadow:0 1px 3px rgba(0,0,0,.06);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;width:100%}

.nav-logo{
  display:flex;align-items:center;gap:10px;
  color:var(--navy);font-family:var(--font-heading);
  font-weight:700;font-size:1.12rem;white-space:nowrap;
}
.nav-logo-icon{font-size:1.3rem}

.nav-links{display:flex;gap:clamp(20px,3vw,36px)}
.nav-links a{
  color:var(--text-mid);
  font-family:var(--font-body);font-size:1.05rem;font-weight:600;
  padding:12px 0;position:relative;
  transition:color var(--dur-fast);
}
.nav-links a::after{
  content:'';position:absolute;bottom:-2px;left:0;width:100%;height:2px;
  background:linear-gradient(90deg,var(--teal),transparent);
  transform:scaleX(0);transform-origin:right;
  transition:transform .4s cubic-bezier(.86,0,.07,1);
}
.nav-links a:hover{color:var(--navy)}
.nav-links a:hover::after{transform:scaleX(1);transform-origin:left}
.nav-links a.active{color:var(--navy)}
.nav-links a.active::after{transform:scaleX(1);transform-origin:left;background:var(--teal)}

.nav-toggle{display:none;flex-direction:column;gap:5px;padding:8px;min-width:44px;min-height:44px;align-items:center;justify-content:center}
.nav-toggle span{width:20px;height:2px;background:var(--navy);border-radius:1px;transition:all .3s}

/* ── SKIP LINK ── */
.skip-link{
  position:absolute;top:-100%;left:1rem;
  background:var(--teal);color:var(--navy);
  padding:.75rem 1.5rem;border-radius:0 0 8px 8px;
  z-index:10000;font-weight:700;font-size:.85rem;
}
.skip-link:focus{top:0}

/* ── PAGE HERO ── */
.page-hero{
  width:100%;
  min-height:50vh;
  background:var(--bg-white);
  display:flex;align-items:center;
  padding:calc(var(--nav-h) + 3rem) clamp(24px,3vw,48px) 3rem;
  position:relative;overflow:hidden;
}
/* noise grain overlay */
.page-hero::before{
  content:'';position:absolute;inset:0;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 600 600'%3E%3Cfilter id='a'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23a)'/%3E%3C/svg%3E");
  background-repeat:repeat;background-size:180px;
  opacity:.02;pointer-events:none;z-index:1;
}
/* teal radial glow */
.page-hero::after{
  content:'';position:absolute;inset:0;
  background:radial-gradient(ellipse at 50% 60%,rgba(0,167,157,.06) 0%,transparent 65%);
  pointer-events:none;z-index:1;
}
.page-hero>*{position:relative;z-index:2}
.page-hero--full{min-height:100vh}

/* cursor glow — navy sections */
.cursor-glow{
  position:fixed;top:0;left:0;width:100%;height:100%;
  pointer-events:none;z-index:9998;
  background:radial-gradient(600px circle at var(--cx,50%) var(--cy,50%),rgba(0,167,157,.04),transparent 40%);
  opacity:0;transition:opacity .4s;
}
.cursor-glow.active{opacity:1}

.page-hero h1{color:var(--navy);margin-bottom:16px}
.page-hero p{color:var(--text-mid);font-size:1.35rem;max-width:680px}
.page-hero .section-label{color:var(--teal)}

.hero-center{text-align:center;width:100%;display:flex;flex-direction:column;align-items:center}

/* ── BUTTONS ── */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 32px;border-radius:var(--r-sm);
  font-family:var(--font-body);font-size:1rem;font-weight:600;
  transition:all var(--dur-med) var(--ease-out);letter-spacing:.01em;
  min-height:44px;
}
.btn--teal{background:var(--teal);color:#fff}
.btn--teal:hover{background:var(--teal-dark);transform:translateY(-2px);box-shadow:0 4px 16px rgba(0,167,157,.3)}
.btn--outline{border:1.5px solid var(--border);color:var(--text-mid)}
.btn--outline:hover{border-color:var(--teal);color:var(--teal)}
.btn--outline-dark{border:1.5px solid var(--border);color:var(--text-mid)}
.btn--outline-dark:hover{border-color:var(--teal);color:var(--teal)}

/* ── CARDS ── */
.card{
  background:var(--bg-white);
  border:1px solid var(--border-light);
  border-radius:var(--r-lg);
  padding:clamp(24px,3vw,36px);
  transition:transform .3s,box-shadow .3s;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}

.card--glass{
  background:var(--bg-white);
  border:1px solid var(--border);
  box-shadow:var(--shadow-sm);
}
.card--glass:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}

/* ── FOOTER ── */
.site-footer{
  background:var(--bg);
  color:var(--text-mid);
  padding:2rem clamp(24px,3vw,48px);
  text-align:center;
  font-size:1.05rem;
  border-top:1px solid var(--border);
}
.site-footer p{max-width:none}
.footer-tagline{font-style:italic;color:var(--text-light);font-size:.9rem;margin-top:6px}
.footer-social{display:flex;justify-content:center;gap:20px;margin-bottom:16px}
.footer-social a{
  display:flex;align-items:center;justify-content:center;
  width:44px;height:44px;min-width:44px;min-height:44px;border-radius:50%;
  border:1px solid var(--border);
  color:var(--text-light);
  transition:all var(--dur-med) var(--ease-out);
}
.footer-social a:hover{color:var(--teal);border-color:var(--teal);transform:translateY(-2px)}
.footer-social svg{width:18px;height:18px}
.footer-sub{font-size:.88rem;color:var(--text-muted);margin-top:4px}

/* ── ANIMATIONS ── */
/* Progressive enhancement: visible by default, hidden only when JS is available */
.reveal{opacity:1;transform:none;transition:opacity .6s ease,transform .6s ease}
html:not(.no-js) .reveal{opacity:0;transform:translateY(20px)}
html:not(.no-js) .reveal.visible{opacity:1;transform:translateY(0)}
.reveal-d1{transition-delay:.1s}
.reveal-d2{transition-delay:.2s}
.reveal-d3{transition-delay:.3s}
.reveal-d4{transition-delay:.4s}
.reveal-d5{transition-delay:.5s}

/* Safety net: force visibility if .visible not applied after 3s */
@keyframes revealSafetyNet{to{opacity:1;transform:none}}
html:not(.no-js) .reveal{animation:revealSafetyNet 0s 3s forwards}

@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}

/* ── FOCUS ── */
:focus-visible{outline:3px solid var(--teal);outline-offset:3px;border-radius:var(--r-sm)}
:focus:not(:focus-visible){outline:none}

/* ── VIEW TRANSITION NAMES ── */
.site-nav{view-transition-name:main-nav}
.site-footer{view-transition-name:main-footer}

/* ── SCROLL-DRIVEN ANIMATIONS (progressive enhancement) ── */
@supports(animation-timeline:view()){
  html:not(.no-js) .reveal{
    animation:scrollReveal linear both;
    animation-timeline:view();
    animation-range:entry 5% entry 75%;
    transition:none;
  }
  html:not(.no-js) .reveal-d1,html:not(.no-js) .reveal-d2,html:not(.no-js) .reveal-d3,html:not(.no-js) .reveal-d4,html:not(.no-js) .reveal-d5{transition-delay:0s}
  html:not(.no-js) .cta-section .reveal,html:not(.no-js) .cta-section .reveal-d1,html:not(.no-js) .cta-section .reveal-d2{
    animation:none;
    transition:opacity .6s ease,transform .6s ease;
  }
}
@keyframes scrollReveal{
  from{opacity:0;transform:translateY(30px) scale(.98);filter:blur(3px)}
  to{opacity:1;transform:translateY(0) scale(1);filter:blur(0)}
}

/* ── REDUCED MOTION ── */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms!important;
    animation-iteration-count:1!important;
    transition-duration:.01ms!important;
    scroll-behavior:auto!important;
  }
  .reveal,html:not(.no-js) .reveal{opacity:1;transform:none;animation:none}
  .terminal-body{display:none}
  .cursor-glow{display:none}
  @view-transition{navigation:none}
}

/* ── RESPONSIVE ── */
@media(max-width:992px){
  .nav-links{
    display:none;flex-direction:column;
    position:absolute;top:var(--nav-h);left:0;right:0;
    background:var(--bg-white);padding:20px clamp(24px,3vw,48px);
    gap:14px;border-bottom:1px solid var(--border);
    box-shadow:0 4px 16px rgba(0,0,0,.08);
  }
  .nav-links.open{display:flex}
  .nav-toggle{display:flex}
}

@media(max-width:768px){
  .page-hero{min-height:40vh}
  .page-hero h1{font-size:clamp(2rem,7vw,2.8rem)}
}

@media(max-width:480px){
  h1{font-size:clamp(2rem,8vw,2.8rem)}
  h2{font-size:clamp(1.7rem,6vw,2.2rem)}
  .btn{padding:12px 24px;font-size:.92rem}
}

/* ── BACK-TO-TOP BUTTON ── */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--navy);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .3s, transform .3s;
  z-index: 90;
  box-shadow: var(--shadow-md);
}
.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
}
.back-to-top:hover {
  background: var(--teal);
}
.back-to-top svg {
  width: 20px;
  height: 20px;
}